Senior Java Backend Engineer — Microservices, Docker

Promtior; Buenos Aires; On-site; ARS 1,200,000 - 1,800,000; Full time

Benefits offered by this job

20 paid days off per year

Flex Days: monthly team activities

Internal clubs (soccer, padel, running

cinema

Job summary

Promtior is seeking a Sr. Java Developer to join our Engineering team and drive the development of robust backend services.

You will build APIs using Spring and Spring Boot, focusing on efficiency, scalability, and clean design, while collaborating with cross-functional teams to deliver high-quality software. You will work with relational databases (JPA/Hibernate) and contribute to code reviews, testing, and continuous improvement across the full development lifecycle, from design through to

Qualifications

• Experience developing APIs or backend services.
• Strong knowledge of JVM performance and memory usage.
• Expertise in microservices and distributed systems.
• Familiarity with patterns like Circuit Breaker, idempotency, or Saga.
• Experience with Docker containers.
• Advanced English proficiency.

Responsibilities

• Develop and maintain Java backend services and APIs.
• Design and implement features using Spring/Spring Boot.
• Work with relational databases and JPA/Hibernate.
• Collaborate with developers and product/tech teams; participate in code reviews.
• Support full development cycle from design to production deployment.
• Focus on quality, performance, and maintainability.

Skills

Java

Spring Framework

Spring Boot

REST APIs

Microservices

Distributed systems

JVM performance

Memory management

Circuit Breaker

Idempotency

Saga patterns

English proficiency

Tools

Docker

Job description

Promtior is seeking a Sr. Java Developer to join our Engineering team and drive the development of robust backend services.

You will build APIs using Spring and Spring Boot, focusing on efficiency, scalability, and clean design, while collaborating with cross-functional teams to deliver high-quality software. You will work with relational databases (JPA/Hibernate) and contribute to code reviews, testing, and continuous improvement across the full development lifecycle, from design through to